13749009 has 8 divisors (see below), whose sum is σ = 19129152. Its totient is φ = 8767440.

The previous prime is 13749007. The next prime is 13749011. The reversal of 13749009 is 90094731.

It is an interprime number because it is at equal distance from previous prime (13749007) and next prime (13749011).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13749009 - 2¹ = 13749007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13749007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99562 + ... + 99699.

It is an arithmetic number, because the mean of its divisors is an integer number (2391144).

Almost surely, 2^13749009 is an apocalyptic number.

It is an amenable number.

13749009 is a deficient number, since it is larger than the sum of its proper divisors (5380143).

13749009 is a wasteful number, since it uses less digits than its factorization.

13749009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199287.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 13749009 is about 3707.9656147273. The cubic root of 13749009 is about 239.5652372033.

The spelling of 13749009 in words is "thirteen million, seven hundred forty-nine thousand, nine".